Can you charge those Li-ion based cells with USB-C charging ports without taking them out of the device? While this would seem to be answered with an unequivocal ‘yes’, recently …read more (https://hackaday.com/2026/03/30/the-hazards-of-charging-usb-c-equipped-cells-in-situ/)

Using a Scientific Satellite for Passive Radar
https://hackaday.com/2026/03/30/using-a-scientific-satellite-for-passive-radar/

The basic principle of radar systems is simple enough: send a radio signal out, and measure the time it takes for a reflection to return. Given the abundant sources of …read more (https://hackaday.com/2026/03/30/using-a-scientific-satellite-for-passive-radar/)

Spy Tech: Conflicts Bring a New Number Station
https://hackaday.com/2026/03/30/spy-tech-conflicts-bring-a-new-number-station/

If you know much about radios and espionage, you’ve probably encountered number stations. These are mysterious stations that read out groups of numbers or otherwise encoded messages to… well… someone. …read more (https://hackaday.com/2026/03/30/spy-tech-conflicts-bring-a-new-number-station/)

Tame the Tape: Open-Source Dotterboard for Bulk SMT Parts
https://hackaday.com/2026/03/30/tame-the-tape-open-source-dotterboard-for-bulk-smt-parts/

One of the great things about building electronics today is how affordable SMT components have become — sometimes just fractions of a cent each. That low price often means ordering …read more (https://hackaday.com/2026/03/30/tame-the-tape-open-source-dotterboard-for-bulk-smt-parts/)

Medieval Alhambra’s Pulser Pump and Other Aquatic Marvels
https://hackaday.com/2026/03/30/medieval-alhambras-pulser-pump-and-other-aquatic-marvels/

https://commons.wikimedia.org/wiki/File:Patio_de_los_Arrayanes_Alhambra_02_2014.jpg
" data-image-caption="Reflective pool of the Court of the Myrtles, looking north towards the Comares Tower. (Credit: Tuxyso, Wikimedia)
" data-medium-file="https://hackaday.com/wp-content/uploads/2026/03/Patio_de_los_Arrayanes_Alhambra_02_2014.jpg?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2026/03/Patio_de_los_Arrayanes_Alhambra_02_2014.jpg?w=800">Recently the Practical Engineering YouTube channel featured a functional recreation of a pump design that is presumed by some to have been used to pump water up to the medieval …read more (https://hackaday.com/2026/03/30/medieval-alhambras-pulser-pump-and-other-aquatic-marvels/)

Recreating One of the First Hackintoshes
https://hackaday.com/2026/03/30/recreating-one-of-the-first-hackintoshes/

Apple’s Intel era was a boon for many, especially for software developers who were able to bring their software to the platform much more easily than in the PowerPC era. …read more (https://hackaday.com/2026/03/30/recreating-one-of-the-first-hackintoshes/)

Retro Open Source Camera Straight from the ’90s
https://hackaday.com/2026/03/30/retro-open-source-camera-straight-from-the-90s/

In our modern society, we have started to take the humble camera for granted. Perhaps because of this, trendy standalone cameras have started to take off. Unfortunately, most of the …read more (https://hackaday.com/2026/03/30/retro-open-source-camera-straight-from-the-90s/)

This Front Panel Makes Its Own Clean-Edged Drill Guides
https://hackaday.com/2026/03/30/this-front-panel-makes-its-own-clean-edged-drill-guides/